2008: The US government publishes rules for email storage.

The National Archives and Records Administration (NARA) issues Bulletin 2008-05, which states that every government email system is supposed to “permit easy and timely retrieval,” and all work emails are supposed to be permanently preserved. Additionally, in the case of a cabinet secretary, permanent records are to be sent to the department’s Records Service Center “at the end of the Secretary’s tenure or sooner if necessary” for safekeeping. (The Washington Post, 3/27/2016)